Lock.



H. G. VOIGHT.

LOCK.

APPLIOATION FILED JULY 1. 1908.

Patented Nov. 2, 1909.

2 SHEETS-SHEET 1.

Vb/w/r ozwuaS H. G. VUIGHT.

LOCK.

APPLICATION FILED JULY 1. 1908.

53 mm wimp- 2 SHEETS-SHEET 2.

Patented N V. 2, 1909.

'fl/w 969 times resorted to by UNITED STATES PATENT @FFEQF.

HENRY G. VOIGHT, OF NEW BRITAIN,,CONNECTICUT, ASSIGNOIR- T0 RUSSELL & ERWIN' MANUFACTURING COMPANY, OF CONNECTICUT.

LOCK.

l '0 all whom "it may con-com:

Be it known that I, HENRY G. VOIGHT, a citizen of the United States, residing at New Britain, Hartford county, State of (Jonnectiout, have invented certain new and useful Improvements in Locks, of which the following is full, clear, and exact description.

My invention relates to improvements in locks, and has particular reference to an improvement in that type in which the various parts of the lock mechanism are carried by a pair of side plates, connected by a face-plate and adjustable to and fro, whereby the entire structure may be assembled by the manufacturer as a unitary mechanism, and may be readily applied to doors of different thicknesses without the necessity of forming the usual mortises.

The main object of this invention is to provide, in such a lock, a stop-work doggin mechanism whereby, when the door is close the latch bolt will be automatically dogged, so that it cannot be pushed back by means of a thin instrument inserted between the edge of the door and the door casing, a method somecrooks.

This invention also contemplates using the ordinary latch bolt to perform the function 9f the usual dead-bolt (a separate and distinct device), thus eliminating this as a separate element. To that end, when it is desired to lbck the door, certain stop-work or night-latch mechanism, so-called, is thrown on which operates to prevent the retraction of the latch bolt by one of the knobs. To prevent the unlawful operation of the stop-work mechanism. by means of a thin instrument inserted between the edge of the door and door casing, I provide means which coiiperatcs with the previously described dogging mechanism, to revent releasing the knob that is nightdatclied by this method of attack. This second mentioned dog is also automatically operated by the same device which operates the latch dog, it being thrown into action by the mole act of closing the door.

In the accompanying drawings, Figure 1 is a plan view of the inner side of one side plate of the lock, this view including the end plate and certain of the parts of the lock mechanism; Fig. 2 is a rear end elevation of the parts shown in Fig. 1; Fig. 3 is a section on the line w0c of Fig. 1, looking from left Specification of Letters Patent.

Application filed July 1, 1908. Serial No. 441,361.

means of the well-known Patented Nov. 2, 190%..

to right; Fig. 4 is a section on the line a2-a2 of F 1g. 1, looking from right to left; Fig. 5 is a section on the line z-z of Fig. l, certain parts being shown in elevation; Fig. 6 is an inside elevation of the side plate and certain parts, adapted to coo'perative association with the side plate, and parts shown in Fig. 1; Fig. 7 is an edge elevation of a detail of construction, detached; Fig. 8 is a front elevation of the latch bolt, detached; Fig. 9 is a view of another detail; Fig. 10 is a detail view partly in section.

1. represents one side plate of the lock, for example, the outer one.

. 2 represents a face-plate, in this instance, rigidly connected with plate 1.

Plate I is ada ted to rest against the side of. the door, whi e plate 2 extends across the face or edge of the door and carries a spring latch bolt 3, pivoted at 3. Bolt 3 is provided with the usual beveled face to engage the strikeplate (not shown) and be repressed thereby im the usual manner as the door closes.

disa side plate operating as a companion plate to the plate 1, and, in this instance, adapted to the inner side of the door. In the particular form shown, plate 4- carries the latch-retracting mechanism. This latchretracting mechanism includes a slide 5 mounted in suitable guideways in the plate 4, which slide is operated by independent knobs (not shown) on opposite sides of the lock and connected with the usual independent roll-backs 6-4).

. For the purposes of this invention, it is unnecessary to describe the particular construction of the slide or roll-back mechanism, it being suiiicient to state that one of the roll-backs at least is controlled by an outer knob (not shown) and may be stopped y means of a. stop-slide 7, whenever dcsircd. This stop-slide 7 may be operated in any well-known manner, for example, b night-latch buttons, such as shown at 8-9 in Fig. 5. These buttons 8-9 usually project through apertures in the faceplate 2 and are connected by means of a pivoted walking beam 10. 11 is a socket on the end of said beam.

12 represents a pin on the stop-slide 7 arranged to stand inthe socket 11 when the lock is assembled. By pushing in on the button 8, the stop-slide 7 will be advanced to NEW BRITAIN, CONNECTICUT. A CORPORATION OF turcs of improvement which sate-guard the catcd in dotted lines in said figure. This gives a partial turn to the shaft 13. Loosely method of unlawful attack.

1 night-latch lock roll-back 6, so thatthe latch-slide cant not be retracted by the outer knob. If the button 8 is projected (as by pushing in the button 9), the stop-slide 7 is retracted, freeing roll-back (3 so that the slider") may be readily retracted from both knobs.

In a lock of the type shown herein, itis intended that the latch-bolt. 3 shall operate both as a latch-bolt and as a dead-bolt, but, since, it is a common method adopted by crooks to force back such bolt by means oi a thin instrument inserted between the edge of' the door and the door casing, it is essential to have mechanism designed to prevent this To that end, I provide dogging mechanism which is automatically actuated upon the mere closing of the door, so that when,'and while, the door is closed, it is impossible to force back the latch-boltby, this at'orcsaid method of attack. Further, in a lock of this type, where the latch-bolt is relied upon as the dead-bolt, it is only available as such when the night-latch is on in other words, when the door cannot be opened by rotating the outer knob. But, since the crook may, in the ordinary case, insert. a thin instrument between the edge ot' the door and the door casing and throw oil' the night-latch 1 also provide means which is automatically operated by the closing of the door to prevent this method of tam 'iering with the As it is to the dogging mechanism that this invention primarily relates, 1 will describe particularly those fealock at such times as it is intended to deadlock the door.

13 is a shalt suitably mounted at the rear of plate 1. This sha'tt carries a crankarm 1H1.

15 is an actuator, having a beveledface, and mounted in the trout plate 2 of the .with the crank 19, so that the end lock, and preferably hinged in the sinne manner as the latch-bolt 3. \Vhen the door is closed. thi actuator 15 is pressed hack and held back by engaging the strike-plate (not. shown). That part of the strike-plate engaged by the actuator 15 is imperforate and hence so long as the door is closed this actuator will he held repressed.

16 is a cam on the actuator 15. This cain bearsa g'ainst the end of the crank 1%, so that when the actuator 15 is pressed back, it will shift the crank from the position indicated in solid lines (Fig. fl) to the positionindi mountedon the shaft 1 3 is a stop-arm 17 in the form of a crank-arm, arranged, when 1n one position, to stand behind a stud 18 on the night-latch mechanism. At other times the stop-arm 17 stands in the position indic'ated in Fig. 5, on top of said stud 18.

having an offset arm 19 arranged to support the stop-arm 17.

17 is aspring arranged to coact with the stop-arm to cause it to normally rest upon the, otl'set arm 19 of the crank 19 (see Figs. 1, 2 and 5). If the. shaftv 13is rotated by the actuator 15, so as to move it in a direction to depress the crank 19 from the position shown in Fig. 5, if it so happens that at any time the button 9 is ressed in, the stop-arm 17 will continue to rest upon the stud 18. If, however, the position of the buttons S9 is reversed from that shown in Fig. 5, it is apparent that said movement ot the shaft 13 would cause the stop-arm 17 to move down of said arm would stand to the rear of the stud 18. Since this-represents the on position of the nightdatch, it follows that it the nightlatch 15 set in such position and the door is closed, the mere act of closing the door will cause the stop-arm 17 to move into a posr "tion to prevent the unlawful manipulation of the stop-work or night'latch mechanism, so long; as the door remains closed. By this means. the lock is safe-guarded in that no unlawful entry can l e effected by the em ployment of a thin instrmnent inserted be twecu the edge of the door and the door casing, for the purpose of shifting the night latch from the position indicated in dotted lines (Fig. to that indicated in solid lines in the same figure.

Now, turning to the dogging mechanism for the latch-bolt. Obviously, unless equally etlective lllOflllSdS- provided to prevent the repressing; of the latch-bolt by a similar method of attack, the employment of a dogging mechanism of the stopavork, such as described, would be to no good purpose. To that end, therefore, I provide adogging mechanism for the latch-bolt 3., which operates simultaneously with the dogging mechanism forthe night-latch. This dog for the latch-boltcomprises a pivoted latch dogging lever 20, preferably drawn by a small spring 21. in a direction to stand to the rear of the latch-bolt 3. as indicated in dotted lines (Fig. 3). This lever 20 is provided with an ofiset shoulder or stud 20, which is engaged by cam 16, previously described. When the actuator 15 pressed back this cam 16 moves away from the stud 20 so that the lever 20 will shift. to the position indicated in dotted lines (Fig. 3), in which position the end of said lever 20 stands directly to the rear of the abutment S on the latch-bolt -3, so that the said latch-bolt cannot be pressed back by any force exerted against the outer side thereof. Pivoted to the rear ot the latch-bolt 8 are two links or tails Q2 and These tails are slotted, the slotted portion of each tail projecting rearwardly, a

suitable guide-stud 'on a stationary part latclrbolt, when safe-guarded as herein degusitranteeing the proper support of said tei s. The function of the tail 22 is simply to limit the forward excursion of the latclrbolt- 3,'while the tail 23 acts as a coupler between the latch-slide 5 (Fig. 6) and the latch-bolt 3. The latch-slide 5 carries a stem 5 which stands forward of a bearing-pin 23 (Fig. 1) i on the tail link 23.

As shown in Fig;

Fig. 3. If any e 'ori is now inadeto press the latch-bolt 3 back, by means of an instrument inserted at the edge of the dooigsuch an effort will be unsuccessful, because thepart 2O stands as a fixed abutment to the rear of said latch. If desirable, however, the latch slide 5' may be retracted in a proper manner by one of the disengaged roll-backs. The first backward movement of slide 5 will re-* tract the tail section By this movement the roller 23* Will, by engagement with the pin 20", tilt the top lever 20 up into the latch-freeing position, indicated in solid lines (Fi 3). A continuation of the retraction of te latch-slide ,5 will then cause the retraction of the latch-bolt 3, this occurring through the medium of the extension 5,

stud 23?, and the tail 28.

From the foregoing, it will be seen that when the night-latch is applied or thrown on ,'the closing of the .door will result in the dog ing of both the latch-bolt 3, as Well as the night-latch, so that nouulawtul tampering with the lock can be successfully practiced. Obviously, if the outer knoois held a ainst movement, no entry can be etfeote fromv the outside, unless suitable key-actuated mechanism is'provided. Such mechanism is custoinary,'but, since it eonstitutes no cart of this invention, it is un necessary to describe it herein.

. By the use of my safety devices, the lock is rendered p're'c'iselyas secure as though the usual dead-bolt were employed, since the 9, the tail link 23 is? slotted so as to have a limited amount otingwith a portion of a door scribed, performswith ideal effect the dual function of a latch-bolt? and a deadbolt.

\Vhat I claim is:

l. in a lock, a spring latclumu-ans for retracting the same. a manually operable stop for dogging the latch retracting means. a swinging dog for said stop, a su'ingi' v u a for said latch, an exposed actuating device for controlling the last two mentioned dogs. said actuating device being arranged to he repressed by engaging with a portion of a door easing when a door to which the lorl is fitted is closed, and means between the latch retracting device and the last men-' tioned dog to actuate the latter when said latch is to be retraeted by said retracting means. V

- In a lock, a spring lateln'meuns for retracting the same, a manually operable stop for dogging the latch actuating means, a shaft, an (3X])()S(-3Fl spring-projected actuator therefor arranged to be repressed by 011 gaging with a portion of a door casing when a door to which the lock is applied is closed, a dog controlled by said shaft for blocking said stop. ai'iother dog'for blocking said latch,

3. In a lock, a spring, latch, means for retractin the same. a manually o erable stow for doggingthe latch actuating means. a

shaft, an exposed. spring-projected actuator therefor arranged. to be repressed by engaging witha portion of a door casing h'hen a door to whichthe loch is applied is closed. a dog controlled by said shaft for blocking said stop, another dogior blocking said latch, saidlastmentioned do, being retrac. ed by the same means for retracting said latch bolt, butin advanced the retraction of the latter. 1 1

t. In a lock, :1 spring latch, means for 1'6} traoting thesame, a manually operable stop fordogging tho latch actuating means, a shaft. an exposed'spring-proje ed actuator therefor arrangedto be ropre d by eugag sing when a door to Which the lock is applied is closed, a .dog controlled by said shaft for blocking said stop, another dog for blocking said latch, each of said dogs being spring-actuated inboth directions.

" .VOlGl-l'l.

. HENR Y Witnesses: i M. S.VIARD,

' CHAS. E. Rossetti. 

